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VASCONCELOS, LOREN CRISTINA; CARRIJO, TATIANA T.; VENANCIO, ALDINO NETO; ALVES, THAMMYRES A.; TULER, AMÉLIA CARLOS; HOLLUNDER, RENAN K.; GARBIN, MÁRIO LUÍS; MENINI, LUCIANO; PRAÇA-FONTES, MILENE M.
Anais da Academia Brasileira de Ciências, 01/2022, Letnik: 94, Številka: 3Journal Article
Abstract We investigated whether essential oil and aqueous and ethanolic extracts from M. vittoriana leaves have phytotoxic effects on the germination and initial development, and cytogenotoxic effects on the cell cycle, of model plants. The essential oil and extracts of M. vittoriana were characterized and used as treatments in phytotoxicity and cytotoxicity tests. The results indicated a reduction in germinative parameters and plant growth, with the higher concentrations of extracts and essential oil having the most evident effects. The cell cycle was also affected with a reduction of the mitotic index and the presence of chromosomal and nuclear alterations. All treatments showed clastogenic and aneugenic modes of action. The results can be associated with the synergistic effects of metabolites found in the extracts and essential oil, mainly the presence of the sesquiterpene germacrene D in the essential oil and of catechins, saponins, and tannins in the extracts. These substances inhibit plant germination and growth, confirming the phytotoxic effects of M. vittoriana in plant models, which should now be tested under field conditions.
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